GB2004653A - Semiconductor gas detecting elements - Google Patents

Semiconductor gas detecting elements

Info

Publication number
GB2004653A
GB2004653A GB7835502A GB7835502A GB2004653A GB 2004653 A GB2004653 A GB 2004653A GB 7835502 A GB7835502 A GB 7835502A GB 7835502 A GB7835502 A GB 7835502A GB 2004653 A GB2004653 A GB 2004653A
Authority
GB
United Kingdom
Prior art keywords
alkali
glassy
borate
oxide
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7835502A
Other versions
GB2004653B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Publication of GB2004653A publication Critical patent/GB2004653A/en
Application granted granted Critical
Publication of GB2004653B publication Critical patent/GB2004653B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Catalysts (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

This invention describes a catalytically inactive gas-detecting element for gas-measuring apparatus of the kind comprising a coil of platinum or platinum alloy 1 which is enveloped by a glassy-coated 3 body 2 of metal oxide. According to the invention the glassy-coating 3 contains a phosphate and/or a borate as a main component and an alkali oxide, an alkali hydroxide or an alkali earth oxide as an additional component. The main component may include compounds of gallium, tin, antimony or germanium. Such an element may be manufactured by applying a glass- forming substance to a metal oxide body from aqueous solution by dipping the body in a concentrated solution of the glass-forming substance and thereafter heating the body which has become impregnated in this way at a temperature of between 400 DEG C and 700 DEG C, preferably at approximately 500 DEG C. In specific examples, the body is dipped in a concentrated solution of an alkali phosphate or borate. <IMAGE>
GB7835502A 1977-09-02 1978-09-04 Catalytically inactive gas-detecting elements Expired GB2004653B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772740158 DE2740158A1 (en) 1977-09-02 1977-09-02 CATALYTICALLY INACTIVE GAS DETECTING ELEMENT AND METHOD FOR THE PRODUCTION THEREOF

Publications (2)

Publication Number Publication Date
GB2004653A true GB2004653A (en) 1979-04-04
GB2004653B GB2004653B (en) 1982-07-14

Family

ID=6018258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7835502A Expired GB2004653B (en) 1977-09-02 1978-09-04 Catalytically inactive gas-detecting elements

Country Status (4)

Country Link
JP (1) JPS5449199A (en)
DE (1) DE2740158A1 (en)
FR (1) FR2402206A1 (en)
GB (1) GB2004653B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125218A (en) * 1982-08-05 1984-02-29 Bacharach Instr Co Catalytic gas sensor reference element

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122662A1 (en) * 1980-06-11 1982-04-01 Mine Safety Appliances Co. Ltd., Reading, Berkshire Electrically heatable element and method of producing it
DE3906599A1 (en) * 1989-03-02 1990-09-06 Draegerwerk Ag Compensation element for a measuring device for combustible gases
DE4004977C2 (en) * 1990-02-19 1994-01-20 Auergesellschaft Gmbh Catalytically inactive gas detection element and method for its production
JP4571665B2 (en) * 2005-02-22 2010-10-27 エフアイエス株式会社 Hydrogen gas sensor
JP4559894B2 (en) * 2005-03-29 2010-10-13 シチズンホールディングス株式会社 Contact combustion type gas sensor element

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197251B (en) * 1958-02-18 1965-07-22 Nat Res Dev Catalytically inactive, heated detector element for gas analyzers
NL236206A (en) * 1958-02-18
US3586486A (en) * 1968-02-23 1971-06-22 Bosch Arma Corp Gas analyzer
US3959764A (en) * 1974-10-09 1976-05-25 Dictaphone Corporation Gas analyzing element
JPS5227556A (en) * 1975-08-27 1977-03-01 Hitachi Ltd Wiring substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125218A (en) * 1982-08-05 1984-02-29 Bacharach Instr Co Catalytic gas sensor reference element

Also Published As

Publication number Publication date
JPS5449199A (en) 1979-04-18
GB2004653B (en) 1982-07-14
FR2402206B1 (en) 1980-03-21
DE2740158A1 (en) 1979-03-15
FR2402206A1 (en) 1979-03-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee